Q. As a newly graduated and young engineer, I'm interested in DIY zinc phosphate
to maximize the corrosion preventive for steel plate. Do you have any idea about
the zinc phosphate composition? ph level, etc.. To be honest, this information
is required to reduce our processing fee. This is done in developing country
where standard is not a primary section. Finally, I would like to thank you
in advanced for the time.

A. Thanks for your email. I have never seen a detailed formulation for a zinc
phosphate pretreatment, although I would suspect that such formulations exist
in text books and technical papers. Articles on zinc phosphate are regularly
published in magazines, such as Metal Finishing Magazine which you can obtain
through a technical library, but you will need to scour through the articles
to find a formulation that works for you.

Please remember that zinc phosphate surface pretreatment chemicals comprise
several other compounds, each of which has a specific purpose in the pretreatment
process.